Alternative Approach to an AB2 Monomer for Hyperbranched Poly(Arylene Ether Ketone Imide)s |
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| Authors: | Zhenning Yu David H. Wang Loon‐Seng Tan |
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| Affiliation: | 1. Department of Chemistry , Wright State University , Dayton, Ohio, USA;2. University of Dayton Research Institute , Dayton, Ohio, USA;3. Polymer Branch , Materials and Manufacturing Directorate, AFRL/MLBP, Air Force Research Laboratory, Manufacturing Technology Directorate , Dayton, Ohio, USA |
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| Abstract: | An alternative approach to an AB2 monomer, N‐[3,5‐bis(4‐hydroxybenzoyl)benzene]‐4‐fluorophthalimde, 4, for hyperbranched poly(arylene ether ketone imide)s has been developed. The key steps were a para‐position selective electrophilic aromatic substitution of fluorobenzene with 5‐nitroisophthaloyl dichloride and a subsequent clean conversion of the aryl fluorides to phenol groups using potassium hydroxide as the nucleophile. The overall yield for the synthesis of 4 was 51.6%. |
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| Keywords: | branched polymer monomers selectivity |
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